Effect of the vane angle for outer secondary air on the flow and combustion characteristics and NOx emissions of the low-NOx axial-swirl coal burner

Lingyan Zeng; Zhengqi Li; Guangbo Zhao; Shanping Shen; Fucheng Zhang

doi:10.1080/10407782.2010.523326

Effect of the vane angle for outer secondary air on the flow and combustion characteristics and NO_x emissions of the low-NO_x axial-swirl coal burner

Lingyan Zeng
, Zhengqi Li^*
, Guangbo Zhao
, Shanping Shen
, Fucheng Zhang

^*Corresponding author for this work

School of Energy Science and Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

We conducted a cold air experiment and numerical simulation to investigate flow and combustion characteristics and NO_x emission of a low-NO _x axial-swirl burner in a 600MWe bituminous coal-burning boiler. Comparison of single-phase numerical simulation results and measurements made by a probe with hot-film sensors shows that the numerical model is a reasonable description. By changing the vane angle for outer secondary air, we obtain different results for the recirculation zone, the divergence angle, the distance that the recirculation zone extends into the burner, the mass of the flue gas that returns to the burner, the temperature of the furnace, and the concentration of NO_x emission. The best vane angle for the outer secondary air is determined to be 15°.

Original language	English
Pages (from-to)	43-57
Number of pages	15
Journal	Numerical Heat Transfer; Part A: Applications
Volume	59
Issue number	1
DOIs	https://doi.org/10.1080/10407782.2010.523326
State	Published - Jan 2011
Externally published	Yes

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title = "Effect of the vane angle for outer secondary air on the flow and combustion characteristics and NOx emissions of the low-NOx axial-swirl coal burner",

abstract = "We conducted a cold air experiment and numerical simulation to investigate flow and combustion characteristics and NOx emission of a low-NO x axial-swirl burner in a 600MWe bituminous coal-burning boiler. Comparison of single-phase numerical simulation results and measurements made by a probe with hot-film sensors shows that the numerical model is a reasonable description. By changing the vane angle for outer secondary air, we obtain different results for the recirculation zone, the divergence angle, the distance that the recirculation zone extends into the burner, the mass of the flue gas that returns to the burner, the temperature of the furnace, and the concentration of NOx emission. The best vane angle for the outer secondary air is determined to be 15°.",

author = "Lingyan Zeng and Zhengqi Li and Guangbo Zhao and Shanping Shen and Fucheng Zhang",

year = "2011",

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doi = "10.1080/10407782.2010.523326",

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pages = "43--57",

journal = "Numerical Heat Transfer; Part A: Applications",

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AU - Zeng, Lingyan

AU - Li, Zhengqi

AU - Zhao, Guangbo

AU - Shen, Shanping

AU - Zhang, Fucheng

PY - 2011/1

Y1 - 2011/1

N2 - We conducted a cold air experiment and numerical simulation to investigate flow and combustion characteristics and NOx emission of a low-NO x axial-swirl burner in a 600MWe bituminous coal-burning boiler. Comparison of single-phase numerical simulation results and measurements made by a probe with hot-film sensors shows that the numerical model is a reasonable description. By changing the vane angle for outer secondary air, we obtain different results for the recirculation zone, the divergence angle, the distance that the recirculation zone extends into the burner, the mass of the flue gas that returns to the burner, the temperature of the furnace, and the concentration of NOx emission. The best vane angle for the outer secondary air is determined to be 15°.

AB - We conducted a cold air experiment and numerical simulation to investigate flow and combustion characteristics and NOx emission of a low-NO x axial-swirl burner in a 600MWe bituminous coal-burning boiler. Comparison of single-phase numerical simulation results and measurements made by a probe with hot-film sensors shows that the numerical model is a reasonable description. By changing the vane angle for outer secondary air, we obtain different results for the recirculation zone, the divergence angle, the distance that the recirculation zone extends into the burner, the mass of the flue gas that returns to the burner, the temperature of the furnace, and the concentration of NOx emission. The best vane angle for the outer secondary air is determined to be 15°.

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SN - 1040-7782

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JO - Numerical Heat Transfer; Part A: Applications

JF - Numerical Heat Transfer; Part A: Applications

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ER -

Effect of the vane angle for outer secondary air on the flow and combustion characteristics and NO_x emissions of the low-NO_x axial-swirl coal burner

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